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Thread: What Is Atorization

  1. #1
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    Question What Is Atorization

    I came across this word " atorization ". It's in a pamphlet talking about design advantages of a progressive lens. Can't find a definition. Anybody know what is means? Thanks.

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    Optimentor Diane's Avatar
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    Sounds interesting. I am sure Darryl will have information on this. Just guessing...atoric...asphericity on both sides...controlling both sphere and cylinder aberrations/errors...better vision.

    Diane
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    One eye sees, the other feels OptiBoard Silver Supporter
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    It's the ******* child of 'atoricity'.
    Science is a way of trying not to fool yourself. - Richard P. Feynman

    Experience is the hardest teacher. She gives the test before the lesson.



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    Master OptiBoarder mdeimler's Avatar
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    Was it referring to an Augen lens ?

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    No, it's a digital lens I use in Canada. In full it says "Optimized to individual prescription requirements permitting aspherization and atorization for each targeted RX (whatever the power and astigmatism)".

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    Master OptiBoarder MakeOptics's Avatar
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    Quote Originally Posted by Leo M View Post
    No, it's a digital lens I use in Canada. In full it says "Optimized to individual prescription requirements permitting aspherization and atorization for each targeted RX (whatever the power and astigmatism)".
    Differing asphericity applied to both major meridians of power in a prescription can be described as atoricity.
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    Master OptiBoarder optical24/7's Avatar
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    From an article I wrote 4 years ago...

    AtoricLens Simplified
    Atoric lenses seem difficult to understand. Let’s simplify
    it.We know and can wrap our brain around
    aspheric lens designs and their benefits. Plus aspheric
    base curves flatten from the center out to the outer
    edges.Minus aspheric base curves get steeper from
    the center out to their outer edges. We also know that
    they improve the cosmetics, reduce thickness, reduce
    induced magnification/mimification, and over all improve optical performance.


    Lens designers don’t arbitrarily increase/decrease lens
    base curves to come up with aspheric lenses; they use
    precise amounts of curve deviation to maximize the
    aspheric effect. In other words, one set of curvature
    deviation that works for a certain power range is not
    ideal for another power range. When dealing with compound
    powers,(lenses with cylinder) we’ve got two differing
    powers in the lens. This means that a single
    aspheric curve is not aspherized optimally for both
    powers.This is where atoric designs come into play.


    Anatoric design has two differing aspheric curves; one
    to optimize the sphere power, and one to optimize the
    cylinder power. These have been part of progressive
    lens designs for years, but these lens designs used
    molding technology. Conventional surfacing cannot
    produce atorics. With new free-form lens production,
    we can now produce these atoric designs on almost
    any lens. In fact most free-form production starts with a
    single vision semi-finished blank. The lens curves and
    atoricity is done on the back. (Note* there are some
    PALdesigns that start with a partial progressive front
    and have atoricity optimization on the back surface).
    Combining atoricity with POW ( position of wear) measurements
    will provide the clearest and widest visual
    field for all our astigmatic patients.

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    Master OptiBoarder MakeOptics's Avatar
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    One other note:

    A lens that has one meridian corrected via a spherical best form curve and the other meridian corrected via apshericity can still be described as atoric. Also the term is applied to the change in surface not the correction similar to FF is a process not a lens design.
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    Quote Originally Posted by optical24/7 View Post
    (Note* there are some PALdesigns that start with a partial progressive front and have atoricity optimization on the back surface).
    I believe that Hoya ID LifeStyle and ID MyStyle are such lenses.

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    Master OptiBoarder optical24/7's Avatar
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    "E" has a boat load of them too.

  11. #11
    One eye sees, the other feels OptiBoard Silver Supporter
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    Quote Originally Posted by optical24/7 View Post
    "E" has a boat load of them too.
    I just heard that the've acquired 51% of the world ships!

    More help for the OP.

    http://www.laramyk.com/wp-content/up...ens_Design.pdf

    Practical aspects with atoric single vision (no other optimizations).

    The wearer might feel an increased sense of refinement, but probably not an increase in acuity, except at extreme angles of gaze.

    Practical aspects with atoric segmented multifocals (no other optimizations).

    Same as SV, although there may be a slight increase in acuity on the near gaze with moderate to high astigmatics.

    Practical aspects with atoric PALs (no other optimizations).

    The same as segmented.

    However, the more advanced softwares are capable of keeping the progressive design from becoming deformed from interaction with the prescribed cylinder, and the unwanted cylinder inherent in PALs. The strong Rx cylinders, and/or oblique axes benefit the most, resulting in increased zone widths and an additional feeling of refinement from the wearer's perspective. As usual, the devil is in the details- contact the lens maunufacturer for details.
    Science is a way of trying not to fool yourself. - Richard P. Feynman

    Experience is the hardest teacher. She gives the test before the lesson.



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